With this mod i'm using an new installation method that is easier for who have the OpenIV installed, this is how it works:

Download and extract the files, you will have this:

Now open the OpenIV and click in Package Installer:

In the next window choose the file HULK script.oiv and click in Open, you will have this window now:

Click in what game version you will install the script on, the next window will be similar to:

Now click in Hulk Script to install the script, if everything is Ok an button to run the game will appear, click in Close.

If you don't have the ScriptHook installed you need to run OpenIV again, repeat the steps, but in the last step choose one of the two options to install the scripthook files, choose based on your game patch version. Without scriptHook you can't run this script.

Installation (ped model)

Always do this steps with game closed ;)

The installation of the ped model is basically same idea, extract the files, run OpenIV, click in Package Installer, choose the file HULK Ped model.oiv, choose the game version and click to install.

If you don't want to use this method you can see the instructions for manual installation in the readme.txt :)